JP2005228883A - Thunder-resistive transformer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate a handling such as a conveyance or installation to an installation site, such as a mountain top, and to prevent misoperations in installation, in advance. <P>SOLUTION: On each single-phase transformers 5 to 7 mounted and fixed to a base plate 1, lead-out terminals 14U, 14W, 15U, 15V, 16V, 16W and 14u, 14w, 15u, 15v, 16v, 16w connected to ends 11U, 11W, 12U, 12V, 13V, 13W of primary side windings and ends 11u, 11w, 12u, 12v, 13v, 13w of secondary side windings of the respective single-phase transformers 5 to 7 are arranged corresponding to positions of the respective single-phase transformers 5 to 7. Also, a predetermined lead-out terminal is connected by conductive plates 17 to 20, 21, 22, thereby arranging a connecting wire panel 10 which connects the ends 11U, 11W, 12U, 12V, 13V, 13W of the primary-side windings and the ends 11u, 11w, 12u, 12v, 13v, 13w of the secondary-side windings of the respective single phase transformers 5 to 7 on the same flat surface. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a lightning-resistant transformer device, and more particularly, to a closed outdoor lightning-resistant transformer device in which a three-phase transformer is accommodated in a housing.

  For example, a lightning-resistant transformer device installed outdoors generally employs a closed structure in which the three-phase transformer is accommodated in a housing so that the three-phase transformer is not exposed to rainwater. . This type of outdoor-type lightning-resistant transformer device is usually configured such that a three-phase transformer is accommodated in a single housing and then the primary winding and secondary winding of the three-phase transformer accommodated therein. It is finally commercialized by wiring lines between input and output. The lightning-resistant transformer device that has been installed and wired in the factory is transported to an outdoor installation location and then installed at a predetermined installation location.

  By the way, since the above-mentioned lightning-resistant transformer device is heavy, which is about several hundred kg, it is very difficult to transport this type of lightning-resistant transformer device to the installation site such as the summit, and its means of transport is also a helicopter. It becomes a method that depends on and human power. If it is a method that relies on human power to transport the lightning-resistant transformer device from the economical aspect, it is possible to disassemble and transport the lightning-resistant transformer device in terms of safety and transportation time and install it by assembling it locally. However, since the installation and wiring work of the three-phase transformer requires skill, mistakes are likely to occur in the installation and wiring work of the three-phase transformer, causing a serious accident.

  In addition, when the three-phase transformer to be incorporated in the lightning-resistant transformer device is composed of three single-phase transformers, the connection between the single-phase transformers becomes complicated, and connection errors between the primary side and the secondary side occur. Since it tends to occur, wiring work becomes even more difficult. In addition, lightning-resistant transformer devices have low voltage, but require high-voltage insulation design, and there are many wiring problems. Ensuring the distance between the primary side and the secondary side and the ground and crossing on the wiring are also against lightning surges. There was an important problem from the attenuation characteristics.

  Therefore, the present invention has been proposed in view of the above-mentioned problems, and the object of the present invention is to facilitate handling such as transportation to the installation site such as a mountaintop and installation, and to make an operation error in the installation. It is an object of the present invention to provide a lightning-resistant transformer device that can prevent the occurrence of the problem.

  As a technical means for achieving the above-described object, the lightning-resistant transformer device according to the present invention includes a primary transformer for each single-phase transformer above three single-phase transformers mounted and fixed on a base plate. A lead terminal to which one end of the side winding and the secondary winding is connected is arranged corresponding to the position of each single-phase transformer, and a predetermined lead terminal is connected by a conductor to thereby connect each single-phase transformer. A wiring board is provided in which one end of the primary winding and the secondary winding are connected on the same plane.

  In the lightning-resistant transformer device of the present invention, the above-described connection board is disposed above the three single-phase transformers, thereby connecting one end of each primary-phase winding and secondary-side winding of each single-phase transformer. Since it is only necessary to connect to the drawer terminal of the panel, it becomes easy to perform wiring work quickly and accurately without erroneous connection. In addition, the wiring of each single-phase transformer is aggregated by using a connection board in which one end of the primary side winding and the secondary side winding of each single-phase transformer are connected on the same plane. Simplification can be achieved.

  In the above configuration, three single-phase transformers are arranged in a plane triangle shape on the base plate, and either the primary side or the secondary side of each single-phase transformer is inside the plane triangle shape, and It is desirable to arrange each single-phase transformer with the other side facing outward. If it does in this way, it will be easy to isolate | separate the wiring of the primary side of each single phase transformer, and a secondary side, and the insulation distance on wiring can fully be ensured.

  Moreover, it is desirable that the connection board in the above-described configuration is made of a transparent insulating material. If the wiring board is transparent, it is possible to visually check one end of each single-phase transformer and its primary side winding and secondary side winding arranged below it. It becomes easy.

  In addition, what is necessary is just to perform the connection of the primary side winding of each single phase transformer and the end of a secondary side coil | winding, and the drawer | drawing-out terminal of a connection board on the lower surface side of a connection board. If wiring is performed on the lower surface side of the connection board in this way, the connection board itself becomes a cover, and the possibility that an operator touches the charging part of the connection part at the time of maintenance inspection or the like is remarkably reduced, and an electric shock accident can be prevented. Moreover, it is also possible to insert one end side of the winding into a hole penetrating the connection board and to perform it on the upper surface side. In this case, the wiring work is further facilitated.

  In the above-described configuration, a structure in which a side plate and a top plate surrounding and surrounding the components including each single-phase transformer can be assembled on the base plate, and the side plate can be divided into at least two or more is desirable. In this way, when transporting to the installation site such as the summit, the components including the three single-phase transformers and the base plate, side plate, and top plate are separated and transported to the installation site. It can be assembled and transported to the installation site.

  In the above-described configuration, each single-phase transformer is mounted and fixed on the base plate by attaching either the primary side or the secondary side of each single-phase transformer at two points, and the other at one point. It is desirable to have a structure that is fixed at three points, or fixed at four points with different mounting pitches on the primary side and secondary side of each single-phase transformer. In this way, when the single-phase transformer is mounted on the base plate, the mounting direction of the single-phase transformer with respect to the base plate is determined, so that no single-phase transformer mounting error occurs.

  According to the lightning-resistant transformer device according to the present invention, one end of the primary side winding and the secondary side winding of each single-phase transformer is disposed above the three single-phase transformers mounted and fixed on the base plate. The lead terminals connected to each single-phase transformer are arranged corresponding to the positions of the respective single-phase transformers, and the primary windings and secondary-side windings of each single-phase transformer are connected by connecting predetermined lead terminals with conductors. By arranging a connection board with one end connected on the same plane, it is easy to perform wiring work quickly and accurately without erroneous connection. Also, the primary winding and secondary side of each single-phase transformer By using a connection board in which one ends of the windings are connected on the same plane, the wiring of each single-phase transformer is concentrated, so that the wiring work can be simplified.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 to 4 are perspective views showing a connection board in the lightning resistant transformer device of the embodiment, FIGS. 5 and 6 are front views showing the connection board in the housing, and FIG. 7 is three single-phase transformers. It is a schematic diagram which shows plane arrangement | positioning. 8 and 12 show a connection board in another embodiment, and FIGS. 13 to 16 show the appearance of the lightning-resistant transformer device.

In this embodiment, for example, a component including three single-phase transformers 5 to 7 in a box-shaped housing 4 (see FIGS. 13 to 16) including a metal base plate 1, a side plate 2, and a top plate 3. This is a closed type lightning-resistant transformer device for outdoor use that accommodates (see FIGS. 1 and 5) and is installed in a power receiving / transforming facility such as a mountain peak. Further, the side plate 2 constituting the housing 4 has a divided structure including a front panel 2a with opening / closing doors 2a ₁ and 2a ₂ (see FIGS. 5 and 13), two side panels 2b and 2c, and a back panel 2d. . Further, the components in the lightning-resistant transformer device include three single-phase transformers, a U-phase transformer 5, a V-phase transformer 6, a W-phase transformer 7, an input primary terminal board 8 and an output. The secondary side terminal plate 9 and the connection board 10 for connecting the single-phase transformers 5 to 7 with, for example, a Δ connection form a main part. In addition, the connection of each single phase transformer 5-7 is not restricted to (DELTA) connection, It is also possible to set it as the other connection form containing Y connection.

  The basic structure and assembly procedure of the lightning-resistant transformer device comprising the above main components are as follows.

  First, the three single-phase transformers 5 to 7 are placed and fixed on the base plate 1 in a plane triangular shape (see FIG. 7) with mounting bolts (not shown). As shown in FIGS. 1 to 6, from the upper part of each single-phase transformer 5-7, one end 11U, 11W, 12U, 12V, 13V of the primary winding to be mutually connected between adjacent single-phase transformers. , 13W and one end 11u, 11w, 12u, 12v, 13v, 13w of the secondary winding are led out for each of the single-phase transformers 5-7.

  When fixing each single-phase transformer 5-7 on the base plate 1, the primary side of each single-phase transformer 5-7 is outside the plane triangle, and the secondary side is inside the plane triangle. Oriented as follows. In contrast to this embodiment, each of the single-phase transformers 5 to 7 may be oriented so that the primary side is inside the plane triangle and the secondary side is outside the plane triangle.

  Here, the performance required for the transformer of the lightning-resistant transformer device requires an insulation design similar to that of a high-voltage transformer, although the voltage is low. For example, in the case of a three-phase transformer with a primary side voltage of 200 V and a secondary side voltage of 200 V, assuming that the impulse voltage insulation performance between the primary side and the secondary side and the equipment ground is 45 kV and the attenuation performance is 60 dB, each primary side The insulation distance between terminals may be about 5 to 6 mm, but the insulation distance between the primary side and the secondary side and the equipment grounding needs to be about 40 to 50 mm.

  Accordingly, since it is important to secure an insulation distance on the wiring also in the above-described embodiment, three single-phase transformers mounted and fixed in a plane triangle shape on the base are connected to the primary side or the two sides. By orienting so that one of the secondary sides is inside the plane triangle and the other is outside, it is easy to separate the primary side and secondary side wires, and the insulation distance on the wires is sufficient. In addition, the housing 4 including the base plate 1, the side plate 2, and the top plate 3 can be easily downsized.

  In the mounting and fixing of the single-phase transformers 5 to 7 to the base plate 1, the primary side of the single-phase transformers 5 to 7 is fixed to the base plate 1 with mounting bolts (not shown) at two points. The secondary side is fixed to the base plate 1 with a mounting bolt (not shown) at one point. In this way, when the single-phase transformers 5 to 7 are attached to the base plate 1, the mounting direction of the single-phase transformers 5 to 7 with respect to the base plate 1 is determined. There is no possibility of an installation error such that the primary side and the secondary side are installed interchangeably and an incorrect connection of wiring occurs.

  In addition, the primary side of each single-phase transformer 5-7 is fixed to the base plate 1 with the mounting bolt at one point, and the secondary side is fixed to the base plate 1 with the mounting bolt at two points, contrary to the above-described three-point fixing. It is good also as fixed to 3 points | pieces to fix, Furthermore, it is also possible to fix to 4 points | pieces in which the attachment pitch was varied on the primary side and secondary side of each single phase transformer 5-7.

  After each single-phase transformer 5-7 is attached to the base plate 1, an iron core ground wire and a winding shield ground wire (not shown) derived from the lower part of each single-phase transformer 5-7 are connected to the base plate 1. Connect to the ground terminal (not shown). Then, the primary side terminal plate 8 and the secondary side terminal plate 9 are attached on the base plate 1, and the ground terminal and the secondary side terminal plate 9 of the base plate 1 for the iron core grounding wire and the winding shield grounding wire described above. Are connected by another grounding wire (not shown). The primary side terminal plate 8 and the secondary side terminal plate 9 described above are attached to the left and right positions on the front side of the base plate 1 in a state of being insulated from the base plate 1 via mounting brackets and support insulators (not shown). .

  Next, one end 11U, 11W, 12U, 12V, 13V, 13W of the primary side winding of each single phase transformer 5-7 and one end 11u, 11w, 12u, 12v, 13v, 13w of the secondary side winding are the same. The connection board 10 for connecting on a plane is arrange | positioned above each single phase transformer 5-7. This connection board 10 is fixedly arranged horizontally above each single-phase transformer 5-7 using a support insulator (not shown) provided on the upper surface of each single-phase transformer 5-7 as a spacer. In this lightning resistant transformer device, one end 11U, 11W, 12U, 12V, 13V, 13W of the primary side winding of each single-phase transformer 5-7 and one end 11u, 11w, 12u, 12v, 13v of the secondary side winding. , 13w are connected on the same plane by the connection board 10 arranged above the single-phase transformers 5 to 7, so that the wiring of the single-phase transformers 5 to 7 is integrated in the connection board 10. Wiring work can be simplified.

  The connection board 10 includes one end 11U, 11W, 12U, 12V, 13V, 13W of the primary side winding of each single-phase transformer 5-7 and one end 11u, 11w, 12u, 12v, 13v, 13w of the secondary side winding. Transparent insulation in which lead-out terminals 14U, 14W, 15U, 15V, 16V, 16W and 14u, 14w, 15u, 15v, 16v, 16w are connected in correspondence with the positions of the single-phase transformers 5-7. Each of the single-phase transformers 5 to 7 is connected by Δ connection to each lead terminal 14U, 14W, 15U, 15V, 16V, 16W and 14u, 14w, 15u, 15v, 16v, 16w. It has the structure connected with the conducting plates 17-20 which are connection conductors, and the lead wires 21 and 22. FIG.

  By using such a connection board 10, one end 11U, 11W, 12U, 12V, 13V, 13W of the primary side winding of each single phase transformer 5-7 and one end 11u, 11w, 12u of the secondary side winding are provided. , 12v, 13v, and 13w are connected to the lead terminals 14U, 14W, 15U, 15V, 16V, and 16W and 14u, 14w, 15u, 15v, 16v, and 16w of the connection board 10 and wiring work can be performed quickly without erroneous connection. And it becomes easy to carry out accurately. Moreover, since the connection board 10 is transparent, each single-phase transformer 5-7 arrange | positioned under that and the one end 11U, 11W, 12U, 12V, 13V, 13W of the primary side winding, and the secondary side winding Since one end 11u, 11w, 12u, 12v, 13v, 13w of the wire can be visually confirmed, wiring work and maintenance inspection are facilitated.

  The lead terminals 14U, 14W, 15U, 15V, 16V, 16W and 14u, 14w, 15u, 15v, 16v, 16w arranged on the connection board 10 are composed of, for example, connecting bolts and nuts, and the like. And can be connected on either the lower surface side or the upper surface side.

  In this embodiment, one end 11U, 11W, 12U, 12V, 13V, 13W of the primary side winding of each single-phase transformer 5-7 and one end 11u, 11w, 12u, 12v, 13v, 13w of the secondary side winding. And the lead terminals 14U, 14W, 15U, 15V, 16V, 16W and 14u, 14w, 15u, 15v, 16v, 16w of the connection board 10 are connected on the lower surface side of the connection board 10. When wiring is performed on the lower surface side of the connection board 10 in this way, the connection board 10 itself becomes a cover, and an electric shock accident to the charging portion of the connection portion can be prevented in advance.

  As another embodiment, in addition to this, one end 11u, 11w, 12u, 12v, 13v, 13w of the secondary side winding of each single-phase transformer 5-7 as shown in FIGS. Ten lead terminals 14u, 14w, 15u, 15v, 16v, 16w may be inserted through holes 29 provided in the vicinity thereof and connected to the lead terminals 14u, 14w, 15u, 15v, 16v, 16w on the upper surface side. Is possible. In this case, the wiring work is further facilitated.

  Note that the ends 11u and 12u, 11w and 13w of the secondary winding are connected by the conductive plates 18 and 19 in the case of the above-described embodiment (see FIGS. 1 to 4). In this case, the holes 29 are provided so that they are connected by the lead lines 18 'and 19' in the layout (see FIGS. 8 to 11). Further, the one end 11U, 11W, 12U, 12V, 13V, 13W of the primary side winding is routed to the upper surface side so as to straddle the edge from the lower surface side of the connection board 10, and the lead terminals 14U, 14W, 15U, 15V, It is connected to 16V and 16W.

  One end 11U, 11W, 12U, 12V, 13V, 13W of the primary side winding of each single-phase transformer 5-7 and one end 11u, 11w, 12u, 12v, 13v, 13w of the secondary side winding, and a connection board The connection with the lead terminals 14U, 14W, 15U, 15V, 16V, 16W and 14u, 14w, 15u, 15v, 16v, 16w arranged in 10 can take various forms, and one end of the primary winding 11U, 11W, 12U, 12V, 13V, 13W and one end 11u, 11w, 12u, 12v, 13v, 13w of the secondary side winding are drawn out terminals 14U, 14W, 15U, 15V, 16V, 16W and 14u, 14w, 15u , 15v, 16v, 16w, or one end 11U, 11W, 12U, 12V, 13V, 13W of the primary winding and A terminal part is provided at the tip of one end 11u, 11w, 12u, 12v, 13v, 13w of the secondary winding, and the terminal part is drawn out terminals 14U, 14W, 15U, 15V, 16V, 16W and 14u, 14w, 15u, You may make it connect to 15v, 16v, and 16w.

  The connection board 10 shown in FIG. 1 to FIG. 6 has lead terminals 14U, 14W, 15U, 15V, 16V, 16W and 14u, 14w, 15u, 15v, 16v, 16w on the lower surface side, and lead plates 17-20 and routing. The wires 21 and 22 are connected in advance for Δ connection of the single-phase transformers 5 to 7.

  That is, for the primary side of each single-phase transformer 5-7, the lead-out terminal 14U of the U-phase transformer 5 and the lead-out terminal 15U of the V-phase transformer 6 and the lead-out terminal 16W of the W-phase transformer 7 and the U-phase transformer The lead terminal 14W of the transformer 5 is connected by the lead wires 21 and 22 which are connection conductors, and the lead terminal 15V of the V-phase transformer 6 and the lead terminal 16V of the W-phase transformer 7 are connected by a conductive plate 17 which is a connection conductor. Thus, the primary side of each of the U-phase, V-phase, and W-phase single-phase transformers 5 to 7 is Δ-connected.

  Further, on the secondary side of each single-phase transformer 5-7, the lead-out terminal 14u of the U-phase transformer 5, the lead-out terminal 15u of the V-phase transformer 6, the lead-out terminal 16w of the W-phase transformer 7 and the U-phase transformer The lead-out terminal 14w of the transformer 5, the lead-out terminal 14v of the V-phase transformer 6 and the lead-out terminal 16v of the W-phase transformer 7 are connected by the conductive plates 18 to 20, respectively, so that the U-phase, V-phase, and W-phase The secondary side of each single-phase transformer 5-7 is Δ-connected.

  By arranging this connection board 10 above each single-phase transformer 5-7 by means of a support insulator (not shown), this support insulator functions as a spacer so that each single-phase transformer 5-7 and connection board 10 A space is formed between them. Using this space, one end 11U, 11W, 12U, 12V, 13V, 13W of the primary winding of each single-phase transformer 5-7 and one end 11u, 11w, 12u, 12v, 13v of the secondary winding , 13w and the lead terminals 14U, 14W, 15U, 15V, 16V, 16W and 14u, 14w, 15u, 15v, 16v, 16w of the connection board 10 can be connected from the side.

  That is, one end 11U, 11W, 12U, 12V, 13V, 13W of the primary side winding of each single-phase transformer 5-7 is connected to the corresponding lead terminals 14U, 14W for each single-phase transformer 5-7 in the connection board 10. , 15U, 15V, 16V, 16W on the lower surface side of the connection board 10 and one end 11u, 11w, 12u, 12v, 13v, 13w of the secondary winding of each single-phase transformer 5-7, The single-phase transformers 5 to 7 in the connection board 10 are connected to the corresponding lead terminals 14u, 14w, 15u, 15v, 16v, and 16w on the lower surface side of the connection board 10.

  In this way, the wiring between the single-phase transformers 5 to 7 is determined in advance by the connection board 10, so that no on-site wiring error occurs and the distance between the wirings is stable. Therefore, the performance required for lightning-resistant transformer devices can be easily secured, a highly reliable product can be provided, and the assembly can be made with a minimum number of local connection points, thus improving the efficiency of wiring work. I can plan.

  In addition, the primary side lead terminals 14U and 14W of the U-phase transformer 5 and the primary side lead terminal 15V of the V-phase transformer 6 and the input primary side terminal plate 8 in the connection board 10 are connected by lead wires 23-25. At the same time, the secondary lead terminals 14u and 14w of the U-phase transformer 5 and the secondary lead terminal 16v of the W-phase transformer 7 and the output secondary terminal plate 9 are connected by lead wires 26 to 28. To do.

  Finally, the front panel 2a with an open / close door constituting the side plate 2, the two side panels 2b and 2c, and the rear panel 2d are assembled on the base plate 1 by bolting and the panels are connected by bolting. Then, by closing the upper opening of the side plate 2 with the top plate 3, the assembly of the lightning proof transformer device is completed. In this embodiment, the side plate 2 has a four-part structure composed of a front panel 2a, two side panels 2b and 2c, and a back panel 2d, but the front panel, one side panel, the back panel, and one sheet It is good also as a 2 division | segmentation structure which each comprised the side panel with the L-shaped panel, and the 3 division | segmentation structure which comprised the front panel, the two side panels, and the back panel with the U-shaped panel. Thus, by making the side plate 2 into a divided structure, the side plate 2 may be assembled at the installation site, and transportation to the installation site is further facilitated.

  When this lightning-resistant transformer device is transported to an installation site such as a summit, three single-phase transformers 5 to 7, an input primary terminal plate 8, an output secondary terminal plate 9, and a base plate 1, the front panel 2a, the two side panels 2b, 2c and the side panel 2 consisting of the back panel 2d and each component including the top panel 3 are transported in a separated state and assembled at the installation site, Transportation to the installation site is easy.

  For example, a conventional lightning proof transformer device having one three-phase transformer of 50 kVA is a heavy object of about 500 kg, and its transportation is very difficult, but three single-phase transformers 5 to 7 are installed. In the lightning resistant transformer device of the above-described embodiment having the above, since the three single-phase transformers 5 to 7 are individually conveyed, the maximum weight is greatly reduced to about 150 kg.

  In addition, assembling at the installation site is performed by placing and fixing the three single-phase transformers 5 to 7 on the base plate 1 as described above, and arranging the connection board 10 above the single-phase transformers 5 to 7. After the simple wiring work, the base plate 1 is completed by assembling the front panel 2a, the side panels 2 consisting of the two side panels 2b and 2c, and the rear panel 2d, and the top panel 3. Can be shortened, and installation work can be simplified.

It is a perspective view which shows the connection board arrange | positioned above the three single phase transformers by embodiment of the lightning-resistant transformer apparatus which concerns on this invention. FIG. 2 is a partially enlarged view of FIG. 1 showing primary and secondary lead terminals of a U-phase transformer in the connection board. FIG. 2 is a partially enlarged view of FIG. 1 showing primary and secondary lead terminals of the V-phase transformer in the connection board. FIG. 2 is a partially enlarged view of FIG. 1 showing primary and secondary lead terminals of a W-phase transformer in the connection board. It is a front view which shows the state which opened and closed the door of the front panel in embodiment of the lightning-resistant transformer apparatus which concerns on this invention. FIG. 6 is a partially enlarged view of FIG. 5 showing a lead-out terminal on the primary side of the U-phase transformer in the connection board. It is a schematic diagram which shows the planar arrangement | positioning of three single phase transformers. In other embodiment of this invention, it is a perspective view which shows the wiring board arrange | positioned above three single phase transformers. FIG. 9 is a partially enlarged view of FIG. 8 showing primary and secondary lead terminals of the U-phase transformer in the connection board. FIG. 9 is a partially enlarged view of FIG. 8 illustrating primary side and secondary side lead terminals of the V-phase transformer in the wiring board. FIG. 9 is a partially enlarged view of FIG. 8 showing primary and secondary lead terminals of the W-phase transformer in the connection board. It is sectional drawing which shows the connection state of the drawing-out terminal of the connection board shown in FIG. 8, and the end of the secondary side coil | winding of each single phase transformer. It is a perspective view which shows the external appearance of a lightning-resistant transformer apparatus in embodiment of this invention. FIG. 14 is a front view of FIG. 13 showing a front panel of the housing. FIG. 14 is a side view of FIG. 13 showing a side panel of the housing. FIG. 14 is a rear view of FIG. 13 showing a rear panel of the housing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base plate 2 Side plate 3 Top plate 4 Housing 5-7 Single phase transformer 10 Connection board 11U, 11W, 12U, 12V, 13V, 13W One end of primary side winding 11u, 11w, 12u, 12v, 13v, 13w Secondary One end of side winding 14U, 14W, 15U, 15V, 16V, 16W Lead terminal 14u, 14w, 15u, 15v, 16v, 16w Lead terminal 17-20 Connecting conductor (conductor plate)
21, 22 Connecting conductor (leading wire)

Claims (8)

  Above each of the three single-phase transformers mounted and fixed on the base plate, lead-out terminals to which one end of each primary-phase winding and secondary-side winding are connected are connected to each single-phase transformer. In addition, a wiring board is installed in which the primary winding and the secondary winding of each single-phase transformer are connected on the same plane by connecting a predetermined lead terminal with a conductor. A lightning-resistant transformer device characterized by the installation.   The lightning-resistant transformer device according to claim 1, wherein the three single-phase transformers are arranged in a plane triangle shape on a base plate.   The lightning-resistant transformer according to claim 2, wherein each single-phase transformer is arranged in such a direction that either the primary side or the secondary side of each single-phase transformer is inside the plane triangle and the other is outside. Equipment.   The lightning-resistant transformer device according to any one of claims 1 to 3, wherein the connection board is made of a transparent insulating material.   The lightning-resistant transformer apparatus as described in any one of Claims 1 thru | or 4 which connected the end of the primary side coil | winding of each said single phase transformer, and the secondary side coil | winding to the lead-out terminal in the lower surface side of the said connection board. .   Either of the primary side winding and the secondary side winding of each single-phase transformer is inserted into a hole penetrating the connection board and connected to a lead terminal on the upper surface side thereof. A lightning-resistant transformer device according to claim 1.   The side plate and the top plate surrounding the component including each single-phase transformer can be assembled on the base plate, and the side plate can be divided into at least two or more. A lightning-resistant transformer device as described in 1.   The mounting and fixing of each single-phase transformer to the base plate is a three-point fixing in which either the primary side or the secondary side of each single-phase transformer is attached at two points and the other is attached at one point. Or the lightning-proof transformer apparatus as described in any one of the Claims 1 thru | or 7 which made it fixed at 4 points | pieces with which the installation pitch was different on the primary side and secondary side of each single phase transformer.